{"schemaVersion":1,"slug":"iec-screened-multi-conductor-cable","name":"Screened multi-conductor cable","kind":"symbol","abbreviation":"W","aliases":["overall screened cable","collectively shielded cable","screened multicore"],"category":"connections-wiring","drawingTypes":["Schematic"],"referenceFamilies":["IEC"],"summary":"Several conductors enclosed together within one drawn screen, showing an overall shield around a multicore cable.","description":["This form draws one screen outline around a group of conductors to show an overall or collective screen. It is common on instrument multicore cables, field bus trunks and multi-pair analogue cables run from field junction boxes back to a marshalling cabinet.","An overall screen is different from individually screened pairs. If each pair also carries its own screen, the drawing needs separate outlines for each pair inside the overall one, otherwise a reader will terminate only one drain. The symbol does not give the core count beyond what is drawn, so the cable schedule still controls the core and pair allocation."],"readingNotes":["Count the conductors drawn inside the outline and compare with the cable schedule.","Check whether individual pair screens are also shown."],"drawingChecklist":["State the cable tag on the screened group.","Show where the overall screen is terminated.","Distinguish overall screens from individual pair screens."],"distinction":"An overall screened cable shields all its cores together; a screened twisted pair shields one pair on its own.","facts":[{"label":"Graphic cue","value":"One screen outline enclosing several conductor lines"},{"label":"Typical use","value":"Instrument multicores and field bus trunk cables"},{"label":"Preview","value":"Original educational illustration; consult the publisher and applicable standard for the exact graphic"}],"references":[{"sourceId":"iec-public-cable","relevance":"Public IEC-60617 preview family for cable markers and multicore annotation."},{"sourceId":"autodesk-index","relevance":"Public directory of IEC-oriented symbol families."}],"related":["iec-screened-conductor","iec-screened-twisted-pair","iec-cable-identification-marker"],"artwork":"s28-iec-screened-multi-conductor-cable","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEC","form":"Overall screened multicore form","reference":"Independent IEC-context illustration of a collective screen; not certified IEC geometry."},"plainEnglish":{"title":"What does Screened multi-conductor cable mean?","introduction":"This form draws one screen outline around a group of conductors to show an overall or collective screen. It is common on instrument multicore cables, field bus trunks and multi-pair analogue cables run from field junction boxes back to a marshalling cabinet.","example":"An overall screen is different from individually screened pairs. If each pair also carries its own screen, the drawing needs separate outlines for each pair inside the overall one, otherwise a reader will terminate only one drain. The symbol does not give the core count beyond what is drawn, so the cable schedule still controls the core and pair allocation.","drawings":"Count the conductors drawn inside the outline and compare with the cable schedule. Check whether individual pair screens are also shown. An overall screened cable shields all its cores together; a screened twisted pair shields one pair on its own.","terms":[{"name":"Schematic","meaning":"A drawing showing function and connections rather than physical appearance."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"Autodesk IEC-60617 preview: Cable identification and twisted-pair annotation","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-37A08C35-43A3-484D-B0EB-0BBCBC4BE709.htm"},{"label":"IEC-60617 symbol preview directory","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-7871E6EF-24D5-467E-9B74-321FEDC9DFDA.htm"}],"detail":"Several conductors enclosed together within one drawn screen, showing an overall shield around a multicore cable. An overall screened cable shields all its cores together; a screened twisted pair shields one pair on its own.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/iec-screened-multi-conductor-cable","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/iec-screened-multi-conductor-cable.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"iec-public-cable","title":"Autodesk IEC-60617 preview: Cable identification and twisted-pair annotation","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-37A08C35-43A3-484D-B0EB-0BBCBC4BE709.htm","type":"cad-reference","scope":"Public publisher IEC-context family names and vendor block references. No vendor images or CAD library files are reproduced, and vendor tokens are not presented as verified IEC database identifiers.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public IEC-60617 preview family for cable markers and multicore annotation."},{"id":"autodesk-index","title":"IEC-60617 symbol preview directory","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-7871E6EF-24D5-467E-9B74-321FEDC9DFDA.htm","type":"cad-reference","scope":"Public reference directory of named symbol categories. Vendor graphics and CAD library files are not redistributed here.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Public directory of IEC-oriented symbol families."}]}